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A kind of water-based self-polishing antifouling coating and its preparation method and application

An antifouling coating and self-polishing technology, applied in antifouling/underwater coatings, rosin coatings, coatings, etc., can solve problems such as not being suitable for long-term immersion use, poor water resistance of paint films, etc., and achieve good self-renewal ability and successful production Good film properties and ultra-low VOC content

Active Publication Date: 2021-03-12
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the presence of ammonium acrylate, the water resistance of the paint film is poor, so it is not suitable for long-term immersion

Method used

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  • A kind of water-based self-polishing antifouling coating and its preparation method and application
  • A kind of water-based self-polishing antifouling coating and its preparation method and application
  • A kind of water-based self-polishing antifouling coating and its preparation method and application

Examples

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preparation example Construction

[0044] The preparation raw material of described aqueous slurry comprises antifouling agent, pigment and filler, organic bentonite, thickener, water-based wetting and dispersing agent and water, and described antifouling agent, pigment and filler, organic bentonite, thickener, aqueous wetting The mass ratio of the dispersant to water is (40-60): (5-10): (3-4): (0.5-1): (0.5-1): (30-40).

[0045] The water-based self-polishing antifouling coating provided by the present invention mainly uses water-based self-polishing emulsion and water-based slurry as raw materials for preparation, and the water-based self-polishing emulsion and water-based slurry are firstly described below.

[0046] In the present invention, the aqueous self-polishing emulsion includes the following preparation raw materials in mass percent:

[0047]Acrylic silicon ester monomer 5-30%, ethylenically unsaturated monomer 10-40%, acrylic acid 0.2-2%, rosin 5-20%, initiator 0.1-1%, emulsifier 0.5-3%, bicarbonate...

Embodiment 1

[0097] Preparation of aqueous self-polishing emulsion:

[0098] Weigh 50g of silicon triisopropyl methacrylate, 30g of butyl acrylate, 50g of methyl methacrylate, 16.5g of styrene and 2.4g of acrylic acid, stir and mix evenly, add 50g of rosin and stir to dissolve until the solution is transparent, add 3g of non Ionic emulsifier OP-10, 1.5g of anionic emulsifier sodium dodecylsulfonate and 150g of deionized water were stirred at 30°C and 600r / min for 40min to obtain component A;

[0099] Dissolve 1.4g of initiator ammonium persulfate into 20g of deionized water to obtain component B;

[0100] Add 0.2g of sodium bicarbonate, 30g of deionized water and 100g of component A into a four-necked flask, stir at 30°C and 600r / min for 30min, then add 3.2g of component B, and gradually raise the temperature to 81°C under stirring. After 40 minutes of reaction, the system turned blue, and then continued to stir and react for 40 minutes to obtain a seed emulsion;

[0101] Maintain the he...

Embodiment 2

[0107] Prepare water-based self-polishing emulsion and water-based slurry according to the method of Example 1;

[0108] Mix 35g of water-based self-polishing emulsion, 48g of water-based slurry, 0.6g of ethylene glycol ether and 15.5g of deionized water, fully stir and disperse for 30min under the condition of 300r / min, and then add it to the resulting mixture under the condition of 200r / min Slowly add 0.3 g of water-based leveling agent BYK375 and 0.6 g of water-based defoamer DC65 in sequence, and continue to stir and disperse for 30 minutes after the addition, to obtain a water-based self-polishing antifouling coating with a solid content of 46.2 wt%.

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Abstract

The invention provides a water-based self-polishing antifouling paint and a preparation method and application thereof, belonging to the technical field of marine antifouling paints. The invention provides a water-based self-polishing antifouling paint, which, in parts by mass, comprises the following components: 30-60 parts of a water-based self-polishing emulsion, 30-70 parts of a water-based slurry, 0.1-0.5 parts of a water-based leveling agent, and a water-based defoaming agent. 0.2 to 1 part of the agent, 0.5 to 1 part of the film-forming aid, and 10 to 20 parts of water. The water-based self-polishing antifouling paint provided by the invention has an ultra-low VOC content (less than 20 g / L), is environmentally friendly, and forms a paint film with good mechanical properties, stable self-polishing rate, and excellent water immersion resistance and antifouling performance.

Description

technical field [0001] The invention relates to the technical field of marine antifouling coatings, in particular to a water-based self-polishing antifouling coating and its preparation method and application. Background technique [0002] In the process of developing the ocean, human beings have been facing the problem of preventing marine fouling organisms from accumulating. Among many antifouling technologies, the use of antifouling coatings is the most cost-effective means. However, the commonly used solvent-based antifouling coatings will release a large amount of organic solvents during the coating process, which will affect the health of operators and pollute the environment. Therefore, the development of environmental protection waterborne self-polishing antifouling coating is imminent. [0003] At present, mature water-based self-polishing anti-fouling coatings are very rare, and they are mostly used in cage culture. Water-based resins are used as film-forming mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D143/04C09D133/12C09D193/04C09D5/16C09D7/61C08F289/00C08F230/08C08F220/14C08F220/18C08F212/08C08F220/06
CPCC09D143/04C09D5/1618C09D5/1625C09D5/1687C08F289/00C08K2003/2248C08K2003/2272C08K2003/3045C08L2205/03C08L93/04C08L1/284C08K13/02C08K3/22C08K3/30C08K3/346C08K5/06C08F230/08C08F220/14C08F212/08C08K3/34C08K2003/085C08K2003/2265C08K2003/2296C08K2003/265C09D5/165C09D17/001C08K3/013C08K9/04C08F2/44C08F230/085C08F220/1804C08F220/06C08K5/09C08F226/10C08F218/08C08F220/20C08F226/06C08K3/08C08K3/26C08K5/18C08K5/3432C08K5/46C08K5/56C08L1/02
Inventor 周峰张建斌杨武芳刘辉裴小维
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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